Dispersion and nonlinearity properties of small solid-core photonic fibers with As2Se3 substrate
| Autor: | Thi Thuy Nguyen, Trong Duc Hoang, Tran Bao Tran Le, Van Trong Dang, Van Lanh Chu |
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| Jazyk: | English<br />Vietnamese |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, Vol 130, Iss 1D (2021) |
| Druh dokumentu: | article |
| ISSN: | 1859-1388 2615-9678 |
| DOI: | 10.26459/hueunijns.v130i1D.6397 |
| Popis: | Characteristics of As2Se3 photonic crystal fibers (PCFs) with a solid-core and small-core diameter are numerically investigated in the long-wavelength range (from 2 to 10 μm). A full modal analysis and optical properties of designed photonic crystal fibers with lattice constant Λ and filling factor d/Λ are presented in terms of chromatic dispersion, effective refractive index, nonlinear coefficients, and confinement loss. The simulation results show that a high nonlinear coefficient of 4410.303 W–1·km–1 and a low confinement loss of 10−20 dB·km–1 can simultaneously be achieved in the proposed PCFs at a 4.5 μm wavelength. Chromatic dispersions are flat. The values of dispersion increase with increasing filling factor d/Λ and decrease with the increase in lattice constant Λ. In particular, some chromatic dispersion curves also cut the zero-dispersion line at two points. The flat dispersion feature, high nonlinearity, and small confinement loss of the proposed photonic crystal fiber structure make it suitable for supercontinuum. |
| Databáze: | Directory of Open Access Journals |
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